Prevalence, enumeration, serotypes, and antimicrobial resistance phenotypes of salmonella enterica isolates from carcasses at two large United States pork processing plants.

Applied and Environmental Microbiology
John W SchmidtMohammad Koohmaraie

Abstract

The objective of this study was to characterize Salmonella enterica contamination on carcasses in two large U.S. commercial pork processing plants. The carcasses were sampled at three points, before scalding (prescald), after dehairing/polishing but before evisceration (preevisceration), and after chilling (chilled final). The overall prevalences of Salmonella on carcasses at these three sampling points, prescald, preevisceration, and after chilling, were 91.2%, 19.1%, and 3.7%, respectively. At one of the two plants, the prevalence of Salmonella was significantly higher (P < 0.01) for each of the carcass sampling points. The prevalences of carcasses with enumerable Salmonella at prescald, preevisceration, and after chilling were 37.7%, 4.8%, and 0.6%, respectively. A total of 294 prescald carcasses had Salmonella loads of >1.9 log CFU/100 cm(2), but these carcasses were not equally distributed between the two plants, as 234 occurred at the plant with higher Salmonella prevalences. Forty-one serotypes were identified on prescald carcasses with Salmonella enterica serotypes Derby, Typhimurium, and Anatum predominating. S. enterica serotypes Typhimurium and London were the most common of the 24 serotypes isolated from preeviscera...Continue Reading

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Citations

Jun 6, 2013·International Journal of Food Microbiology·Denis Augusto SpricigoMontserrat Llagostera
Apr 16, 2015·Critical Reviews in Food Science and Nutrition·Elisabetta LambertiniAbani K Pradhan
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Jun 2, 2020·Frontiers in Microbiology·Yann SévellecSabrina Cadel-Six
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Jan 24, 2021·Applied and Environmental Microbiology·Manita GuragainJoseph M Bosilevac
Aug 20, 2021·Journal of Food Protection·Kaknokrat ChonsinOrasa Suthienkul

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